Define "accurate"
Is homelessness up 18%? Probably not. The Homeless used to be an unseen and uncounted problem. The probably of Homlessness and vagrancy in Downtown LV has been a problem for years.
Lately, with the "clean-up" efforts downtown, the city's investment in the Freemont Street Experience, and new investors and money starting to rebuild Downtown, the homeless population has come into the spot light.
Plus, recently several shelters and organizations that have helped the homeless have shutdown, pushing them more visibly onto the streets.
The City about a year ago started cracking down on the homeless, giving them jaywalking tickets, puting them into jail for loitering, etc. whenever they were around Freemont Street. I guess the expense of continually jailing them on petty offenses (and making them more 'countable') is catching up with them.
Go down Freemont Street to the Western Hotel and Casino. You will see the same faces as always. There are probably a few more, thanks to the current Administrations kinder gentler policies. I guess they are waiting for the trickle down from the top tax bracket tax cuts.